CVE-2018-18493

NameCVE-2018-18493
DescriptionA buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1605-1, DLA-1624-1, DSA-4354-1, DSA-4362-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid127.0-1fixed
firefox-esr (PTS)buster91.12.0esr-1~deb10u1fixed
buster (security)115.12.0esr-1~deb10u1fixed
bullseye115.7.0esr-1~deb11u1fixed
bullseye (security)115.12.0esr-1~deb11u1fixed
bookworm115.7.0esr-1~deb12u1fixed
bookworm (security)115.12.0esr-1~deb12u1fixed
sid, trixie115.12.0esr-1fixed
thunderbird (PTS)buster1:91.12.0-1~deb10u1fixed
buster (security)1:115.12.0-1~deb10u1fixed
bullseye1:115.7.0-1~deb11u1fixed
bullseye (security)1:115.12.0-1~deb11u1fixed
bookworm1:115.7.0-1~deb12u1fixed
bookworm (security)1:115.12.0-1~deb12u1fixed
trixie1:115.11.0-1fixed
sid1:115.12.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)64.0-1
firefox-esrsourcejessie60.4.0esr-1~deb8u1DLA-1605-1
firefox-esrsourcestretch60.4.0esr-1~deb9u1DSA-4354-1
firefox-esrsource(unstable)60.4.0esr-1
thunderbirdsourcejessie1:60.4.0-1~deb8u1DLA-1624-1
thunderbirdsourcestretch1:60.4.0-1~deb9u1DSA-4362-1
thunderbirdsource(unstable)1:60.4.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-18493
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18493
https://www.mozilla.org/en-US/security/advisories/mfsa2018-31/#CVE-2018-18493

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